diff --git a/lib/API.js b/lib/API.js
index 50c25b3d..f128a915 100644
--- a/lib/API.js
+++ b/lib/API.js
@@ -1036,11 +1036,11 @@ API.prototype._startJson = function(file, opts, action, pipe, cb) {
 
       that.Client.executeRemote('prepare', resolved_paths, function(err, data) {
         if (err) {
-          Common.printError(conf.PREFIX_MSG + 'Process failed to launch', err);
+          Common.printError(conf.PREFIX_MSG_ERR + 'Process failed to launch %s', err.message ? err.message : err);
           return next();
         }
         if (data.length === 0) {
-          Common.printError(conf.PREFIX_MSG + 'Process config loading failed', data);
+          Common.printError(conf.PREFIX_MSG_ERR + 'Process config loading failed', data);
           return next();
         }